RESEARCH BUTT-JOINT OF BORON STEEL BY FRICTION WELDING PROCESS
Friction stir welding (FSW) is a solid-state joining process and is widely used in
many industries because it is efficient, low cost, and environmentally friendly.
Boron steel is a lightweight material but high-strength steel with a tensile strength
of up to 1500MPa. In fact, it is also used in the automotive and aerospace industries
due to the lightweight, high bearing, and energy-saving capacity when
manufacturing the shell frame texture. In this research, the butt-joint boron steel of
1mm thickness was welded successfully by the friction stir welding process. The
microstructure and basic mechanical properties of the welding were investigated
by different methods. The results of the research showed that we can use friction
stir welding to weld boron steel without heating before welds and this method can
change the structure of boron steel at welding areas.